Matrox help?

[Mike P]

Hey all,

Looking for ideas about why my Matrox Triplehead DP won't save the proper resolution. I have Matrox's Powerdesk for OSX Mountain Lion installed and it sees the projectors properly. It will recognize that the desired resolution is 3072x768. But it seems to reset it to 2 monitors at 640x480. So I go into EDID management in Powerdesk and reset it to 3072x768, apply changes, and exit. Then I'll go right back into EDID management and it will have reset to 2 or 3 at 640x480.

Can anyone tell me what I'm missing? Any clues?

iMac 27" the biggest video card, latest version of Mountain Lion.
3 BenQ MX511 on the Matrox
POwerdesk 1.04.03.006 (latest)
Updated firmware in the Matrox yesterday (THDP FW August 2011)
1 BenQ MX613ST on a VGA adapter on the other Minidisplay port.

Mike Post
(601) 307-8657
mdp...@mac.com
http://mdpostdesign.com

[Mike P]

Not using a Macbook. It's a 27" iMac. But good to know there's some incompatibilities...

I sent a message to Matrox support and retrenched to my IOGear USB-VGA cards. Scary, but it's working.

Mike Post
(601) 307-8657
mdp...@mac.com
http://mdpostdesign.com

On Sep 8, 2013, at 11:42 AM, Patrick Spadrille <patrick....@gmail.com> wrote:

> Are you sure your MacBook Pro is fully compatible mith you model of TripleHead2Go? i Says that beacause i had the same problem a
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[Patrick Spadrille]

Are you sure that you Mac is FULLY compatible with the Matrox? I say that because i had the same problem a few weeks ago. My MacBookPro could'nt have the full resolution out of my TripleHead2GO Digital. After speaking with Matrox, i discover that my MacBook Pro was not compatible and that i needed the TripleHead2Go Digital SE. The SE makes all the difference and now it works. On the matrox site there is a pretty exhaustive sheet showing which model of TripleHead2Go is compatible with which Mac. Be sure to verify that. Also don't hesitate to contact Matrox. They are pretty responsive.

[Mike P]

Thanks for the heads up on that. I tried my DP and a Digital Edition we happened to have with the same results on both. I'll have to check out the compatibilities.

Mike Post
(601) 307-8657
mdp...@mac.com
http://mdpostdesign.com

On Sep 8, 2013, at 11:47 AM, Patrick Spadrille <patrick....@gmail.com> wrote:

> Are you sure that you Mac is FULLY compatible with the Matrox? I say that because i had the same problem a few weeks ago. My MacBookPro could'nt have the full resolution out of my TripleHead2GO Digital. After speaking with Matrox, i discover that my MacBook Pro was not compatible and that i needed the TripleHead2Go Digital SE. The SE makes all the difference and now it works. On the matrox site there is a pretty exhaustive sheet showing which model of TripleHead2Go is compatible with which Mac. Be sure to verify that. Also don't hesitate to contact Matrox. They are pretty responsive.
>

[Patrick Spadrille]

Here is the compatibility wizard :

http://www.matrox.com/graphics/en/products/gxm/mac/choice/ 

[Patrick Spadrille]

By looking at the wizard, the DP should work but not the Digital. Do you use port 1 and 3?

[Mike P]

According to what I see, my machine (27" iMac Late 2012) should work with either the DP or the Digital. I need all three ports for this show.

Thanks again!

Mike Post
(601) 307-8657
mdp...@mac.com
http://mdpostdesign.com

On Sep 8, 2013, at 11:54 AM, Patrick Spadrille <patrick....@gmail.com> wrote:

> By looking at the wizard, the DP should work but not the Digital. Do you use port 1 and 3?
>

[Dave "luckydave" Memory]

On Sunday, September 8, 2013 at 11:56 AM, Mike P wrote:

According to what I see, my machine (27" iMac Late 2012) should work with either the DP or the Digital. I need all three ports for this show.

What adapter are you using to get from the Mac's Mini DisplayPort to the TripleHead's DisplayPort? In some cases, such as with a DE, I've had problems with non-Matrox adapters, and IIRC, their manual insists that you use the supplied adapters to get the proper performance. Additionally, are you putting anything in between the computer and the TripleHead, such as extending that feed with another cable? That could also be the issue. If you use the Matrox adapter, and go directly from the computer to the TripleHead, does it retain the settings you give it in Power Desk?

-- 

luck...@figure53.com 

[Patrick Spadrille]

According to the wizard the Digital SE is compatible, not the digital. Are all your 3 monitors the same models? Or are you sure they have all 3 of them the same resolution?

[Patrick Spadrille]

Hi Dave. As you speak about the possibility to put an extending between the TripleHead2Go and the monitors, is there any? I tried a repeater and it doesn't work. Is the only solution to use one and just one cable with the length limitations it supposes? i know that's not really the subject but since this thread is titled "Matrox help" i thought it could be as good to post this problem in here too. But if you prefer, i start another thread.

[Mike P]

I'm using just what cam with the Matrox - no substitutions, no extensions to the Triplehead.

Mike Post
(601) 307-8657
mdp...@mac.com
http://mdpostdesign.com

[Mike P]

OK - the Digital Edition we tried may or may not be SE, I'm not sure, but my DP doesn't work which it should according to the Wizard.

Mike Post
(601) 307-8657
mdp...@mac.com
http://mdpostdesign.com

On Sep 8, 2013, at 12:03 PM, Patrick Spadrille <patrick....@gmail.com> wrote:

> According to the wizard the Digital SE is compatible, not the digital. Are all your 3 monitors the same models? Or are you sure they have all 3 of them the same resolution?
>

[Mike P]

All three projectors are BENQ MX511s set to 1024x768 at 60Hz

Mike Post
(601) 307-8657
mdp...@mac.com
http://mdpostdesign.com

On Sep 8, 2013, at 12:03 PM, Patrick Spadrille <patrick....@gmail.com> wrote:

> According to the wizard the Digital SE is compatible, not the digital. Are all your 3 monitors the same models? Or are you sure they have all 3 of them the same resolution?
>

[Patrick Spadrille]

Mh. You should probably contact Matrox about that one. They are very helpfull.

[Mike P]

Already sent a message :-) I'll see what they say. Thanks for your help (you too luckydave!)

Mike Post
(601) 307-8657
mdp...@mac.com
http://mdpostdesign.com

On Sep 8, 2013, at 12:27 PM, Patrick Spadrille <patrick....@gmail.com> wrote:

> Mh. You should probably contact Matrox about that one. They are very helpfull.
>

[Freddy Komp]

This might be almost OT, but I thought I'd share my Matrox experience and work-around... it is, to be fair, for one of those "non-supported" scenarios...

I have a Matrox TripleHead2Go digital edition, and to get it to work (with my Thunderbolt MacMini,MacBook Pro/Retina), I ended up buying a Third Party adaptor (in my case from Dr Bott (i.e. http://compare.ebay.com.au/like/231032094099?ltyp=AllFixedPriceItemTypes&clk_rvr_id=518648641946&crlp=1_262691_262711&UA=M*F%3F&GUID=7c53ce6b13a0a47a2687c547fe38489b&mt_id=641&query={query}&fitem=231032094099&linkin_id=8055011&kw={query}&crdt=0&sortbid=20&ff4=262691_262711 ) to get Dual Link DVI into the Matrox.

However, even with this necessity (as Apple's own Dual Link adaptor only works for their cinema displays), one bug has remained unsolved, but I found a weird but stable work around:

1. When I turn the machine in question on with the EDID settings that I stored into it (ie. 3072 by 768 @ 75Hz), the attached projectors will show what looks like an interlaced image - only every second line, with the other lines either black or maybe offset by quite a bit), so unusable.

2. I then go into the Matrox' Powerdesk "EDID Management", remove the one stored resolution from the list on the right, and then add the same or another compatible one (i.e. same res but 85Hz) to the list, and click apply.

3. The Powerdesk will then ask to reboot the system for these changes to take effect. Here is the fun part. If you click YES and reboot, THE PROBLEM REMAINS UNSOLVED (go back to step 1 ;). However...

4. If you click NO and exit the utility, voilà, THE ATTACHED PROJECTORS NOW WORK without the weird interlacing.


Just thought I'd share this bit of trivia, as the work around is counter-intuitive to say the least.


Cheers,

Freddy

[Chris Eschweiler]

What happens if you select 3072x768 at 60Hz?

Sent from an iGadget

--

[Freddy Komp]

Same thing,

I should mention that I worked this work around out by accident - Matrox support was no help at all, as they worked out that I am using the TH2G on a non-supported system (i.e. an apple without DVI port). The issues seem to be across the resolutions and refresh rates, and across different projectors. I mean, the good thing is that I found how to get it to work, not really a great inconvenience - but I just thought, there might be others that encounter this issue and benefit from this, erm, easter egg ;).

Freddy